Improvement in rotary blowers



L. ANDREW-S, 2d.

Rntary Blowers.

Patented April 7, 1874.

UNITED STATES ATENT OFFICE.

LEONARD ANDREWS, 2D, or sAoo, MAINE..

IMPROVEMENT IN ROTARY BLOWERS.

Specification forming part of Letters Patent No. 149,368, dated April 7,1874; application filed January 22, 1874.

To all whom it may concern:

Be it known that I, LEONARD ANDREWS, 2d, of Saco, in the county of Yorkand State of Maine, have invented certain new and useful Improvements inFire-Blowers; and I do hereby declare that the following is a full,clear, and exact description thereof, that will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings and to the letters of reference markedthereon, which form a part of this specification.

Figure lis a side elevation. Fig. 2 is an opposite side view.

Same letters shoe'r like parts.

The purpose of my invention is to provide a convenient and effectivedevice for a fireblotver, to take the place of the ordinary bellows usedfor such purpose. My invention further intends to haveithe said deviceportable, in order to add to its convenience in use.

The following is a description of the different parts of my invention,used in combination for the purpose above named.

A is a base, upon which the device rests, and is made in order thatWherever placed the blower may have a proper stand. B is a cylv inder,provided with the induction-openings C,

and having also' the pipe or nozzle D. This nozzle may be made straight,bent, jointed, or flexible, as the intended use of the blower mayrequire. Rising from the base is the frame or standards E. On the arm Fis supported and pivoted the lever G, with the connecting-rod Hextending from said arm to the crank I. This crank, when rotated,revolves the balance-l Wheel J, which is set upon the shaft K in theframe E. Upon this shaft is rigidly set the large gear L. This g'earmatches With the small gear M set upon the shaft N, upon which is alsoset the large gear O. This gear last mentioned matches the small gearI), rigidly set on the shaft P', which enters the cylinder B, and hasattached to it the fans constituting the blower-wheel. The four gearsand the three shafts above described illustrate the method whiehI employto impart the neces sary speed of revolution to the fan wheel Within thecylinder I, and they are supported in the frame E, as illustrated in thedrawing. R is an arm extending from one of the supports or standards E,and bent so as to receive through a hole the hand-lever S. This lever isconnected with the crank I, and Works in a horizontal direction, ornearly so. The purpose of this leveris to move the crank I bcyond thecenter, if it should happen to be in that position when the lever Gr isabout to be Worked, in order to rotate the blower Within the cylinder B.The position of the gears is clearly shown in the detail view.

That I claim as my invention, and desire to secure by Letters Patent is-In combination with a rotary blower having standards E, projecting armF, lever G, and connecting rod H, operating the fanshaft through thcmedium of the crank I and intermediate gearing', the arm It, andhand-lever S supported thereby, as and for the purposes hereindescribed.

In testimony that I claim the foregoing I have hereunto set my hand'this 17th day of January, 1874.

LEONARD ANDREWS, 2D. Vitnesses:

IRA ANDREWs, FRANK I-I. JoRDANs.

